There are three types of soap bars, and their use will determine their size and weight of your soap bar.
Hand, Face, Beauty Soap Bar
This type of soap bar is known as the hand, face, beauty soap bar type. It is also known as a 'standard' size. The 'standard' type pertains to its size and weight as well. Other types of soaps will be sized smaller than or larger than the 'standard'. Still other types of bars will have their weight less than or more than the 'standard' hand, face, beauty bar soap.
Bath, Body, Family, Laundry, Utility, Industrial, Pet Animal Soap Bar Type
These bars are much larger in size and thus will weigh more. And because of the larger size and weight, these bars are known as specialty laundry soap bars, body bars, and family-size shower bars. The industrial-sized soap bars are used as animal-care soap bars for pets, and livestock.
Guest, Hotel, Sampler, Single-Use Soap Bar Type
The small soap type category has been growing over the past few years. These sample soap bars are great as hand-outs to promote your business and your brand name products. Make sure to include your business name and logo plus, a telephone number and even an address. You can also work with your city's hotels and motels to promote their establishments or your products using these smaller soap bars. The smaller sizes are also used as an aromatic bath 'fizzy' which release scents when dissolved in warm bath water. The smaller sizes can be used ideally for lip balms, and small moisturizing hand lotion bars that will solidify.
We recommend this type of small bar be a 24-cavity silicone mold to produce twenty-four items in a single casting.
You may want to consider marketing the hand, face, beauty bar soaps as three separate soap bar types. The beauty bar is just that -- your finest soap bar -- containing your finest oils, aromas. In few cases, customers may not wish to use a hand soap as a face soap. Consider, as well, an advertised garden soap used for hand washing only.
So, let's move on to Different Shapes of Soap Bars.